A reinforced longitudinal beam for railway vehicles includes a first partial beam and a second partial beam. The first partial beam is connected to a second assembly of the railway vehicle and the second partial beam is connected to a first assembly of the railway vehicle. Particular surfaces are provided on the first partial beam for forming a welded connection to the second partial beam, and particular surfaces are provided on the second partial beam for forming a welded connection to the first partial beam, wherein one of the partial beams comprises an end facing.